I think the psalmist weeps because the nature of God’s statues is not understood. They are not meant to be burdensome or arbitrary or restrictive of liberty. They are wonderful because they enrich relationships within the human community which is the way that both God and the community is blessed. The law of the Lord is about living with each other in peace and harmony, celebrating the good gifts of life, while together enduring difficulties with dignity and patience and enduring hope. A community living in the light of the Lord, who is gracious and merciful, slow to anger and abounding in steadfast love, is redeemed from human oppression which is self centered and judgmental, quick to anger and consumed by hatred. But even the secret sins we keep politely hidden diminish relationship and rob us of the joy of living the freedom the law offers. So the psalmist praying for mercy and panting for the commands of the Lord weeps streams of tears for those who do recognize the gift that God offers in the law.